Web Api OData v4 FromODataUri always returning 404 Not Found

I' trying invoke a web api odata controller method that receives a parameter from the uri, like below:

    // GET /odata/People(3)
    public SingleResult<Person> Get([FromODataUri] int key)
    {
        return SingleResult.Create(DemoDataSources.Instance.People.Where(p => p.ID == key.ToString()).AsQueryable());
    }

The method above is not being hit by the url http://localhost:port/odata/People(3) always returning 404 Not Found.

I've configured a new Asp.Net OData Web Application from the scratch with the following files:

PeopleController.cs

[EnableQuery]
public class PeopleController : ODataController
{

    // GET /odata/People
    public IHttpActionResult Get()
    {
        return Ok(DemoDataSources.Instance.People.AsQueryable());
    }

    // GET /odata/People(3)
    public SingleResult<Person> Get([FromODataUri] int key)
    {
        return SingleResult.Create(DemoDataSources.Instance.People.Where(p => p.ID == key.ToString()).AsQueryable());
    }
}

WebApiConfig.cs

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        // Web API configuration and services
        // Configure Web API to use only bearer token authentication.
        config.SuppressDefaultHostAuthentication();
        config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType));

        // Web API routes
        config.MapHttpAttributeRoutes();

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );

        config.MapODataServiceRoute("odata", "odata", GetEdmModel(), new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer));
        config.EnsureInitialized();
    }

    private static IEdmModel GetEdmModel()
    {
        ODataConventionModelBuilder builder = new ODataConventionModelBuilder();
        builder.Namespace = "Demos";
        builder.ContainerName = "DefaultContainer";
        builder.EntitySet<Person>("People");
        builder.EntitySet<Trip>("Trips");
        var edmModel = builder.GetEdmModel();
        return edmModel;
    }
}

DemoDataSources.cs

public class DemoDataSources
{
    private static DemoDataSources instance = null;
    public static DemoDataSources Instance
    {
        get
        {
            if (instance == null)
            {
                instance = new DemoDataSources();
            }
            return instance;
        }
    }
    public List<Person> People { get; set; }
    public List<Trip> Trips { get; set; }
    private DemoDataSources()
    {
        this.Reset();
        this.Initialize();
    }
    public void Reset()
    {
        this.People = new List<Person>();
        this.Trips = new List<Trip>();
    }
    public void Initialize()
    {
        this.Trips.AddRange(new List<Trip>()
        {
            new Trip()
            {
                ID = "0",
                Name = "Trip 0"
            },
            new Trip()
            {
                ID = "1",
                Name = "Trip 1"
            },
            new Trip()
            {
                ID = "2",
                Name = "Trip 2"
            },
            new Trip()
            {
                ID = "3",
                Name = "Trip 3"
            }
        });
        this.People.AddRange(new List<Person>
        {
            new Person()
            {
                ID = "001",
                Name = "Angel",
                Trips = new List<Trip>{Trips[0], Trips[1]}
            },
            new Person()
            {
                ID = "002",
                Name = "Clyde",
                Description = "Contrary to popular belief, Lorem Ipsum is not simply random text.",
                Trips = new List<Trip>{Trips[2], Trips[3]}
            },
            new Person()
            {
                ID = "003",
                Name = "Elaine",
                Description = "It has roots in a piece of classical Latin literature from 45 BC, making Lorems over 2000 years old."
            }
        });
    }
}

Person.cs

public class Person
{
    [Key]
    public String ID { get; set; }
    [Required]
    public String Name { get; set; }
    public String Description { get; set; }
    public List<Trip> Trips { get; set; }
}

Trip.cs

public class Trip
{
    [Key]
    public String ID { get; set; }
    [Required]
    public String Name { get; set; }
}

I "think" this problem has to do with odata routing but I have no clue why such a basic behavior is not working properly ...

Appreciate any help! Marcos

You need to use single quotes for the id in the route because of the string type of the key property of the Person class: http://localhost:port/odata/People('3')